From: Chen-Yu Tsai <[email protected]> [ Upstream commit 9e71c589e44ddf2b86f361c81e360c6b0d0354b1 ]
The reset control for the sunxi mmc controller is optional. Some newer platforms (sun6i, sun8i, sun9i) have it, while older ones (sun4i, sun5i, sun7i) don't. Use the properly stubbed _optional version so the driver does not fail to compile when RESET_CONTROLLER=n. This patch also adds a check for deferred probing on the reset control. Signed-off-by: Chen-Yu Tsai <[email protected]> Cc: <[email protected]> # 3.16+ Acked-by: David Lanzendörfer <[email protected]> Signed-off-by: Ulf Hansson <[email protected]> Signed-off-by: Sasha Levin <[email protected]> --- drivers/mmc/host/sunxi-mmc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c index d1663b3..aac659b 100644 --- a/drivers/mmc/host/sunxi-mmc.c +++ b/drivers/mmc/host/sunxi-mmc.c @@ -909,7 +909,9 @@ static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host, return PTR_ERR(host->clk_mmc); } - host->reset = devm_reset_control_get(&pdev->dev, "ahb"); + host->reset = devm_reset_control_get_optional(&pdev->dev, "ahb"); + if (PTR_ERR(host->reset) == -EPROBE_DEFER) + return PTR_ERR(host->reset); ret = clk_prepare_enable(host->clk_ahb); if (ret) { -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
